SSM整合redis

Posted 2022-07-12 senjiang

这个公司的项目都是老项目，ssm框架，现如今有一个redis的需求。于是，开始着手

1：application-redis.xml

　　

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:context="http://www.springframework.org/schema/context"
      xmlns:redis="http://www.springframework.org/schema/redis" xmlns:cache="http://www.springframework.org/schema/cache"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/redis
    http://www.springframework.org/schema/redis/spring-redis.xsd
    http://www.springframework.org/schema/cache
    http://www.springframework.org/schema/cache/spring-cache.xsd
    ">
   <context:property-placeholder order="1" location="classpath:config/redis.properties" ignore-unresolvable="true"/>
   <!-- Redis -->
   <!-- 连接池参数 -->
   <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
      <property name="maxIdle" value="$redis.pool.maxIdle" />
      <property name="minIdle" value="$redis.pool.minIdle" />
      <property name="maxTotal" value="$redis.pool.maxTotal" />
      <property name="maxWaitMillis" value="$redis.pool.maxWaitMillis" />
      <property name="minEvictableIdleTimeMillis" value="$redis.pool.minEvictableIdleTimeMillis"></property>
      <property name="numTestsPerEvictionRun" value="$redis.pool.numTestsPerEvictionRun"></property>
      <property name="timeBetweenEvictionRunsMillis" value="$redis.pool.timeBetweenEvictionRunsMillis"></property>
      <property name="testOnBorrow" value="$redis.pool.testOnBorrow" />
      <property name="testOnReturn" value="$redis.pool.testOnReturn" />
      <property name="testWhileIdle" value="$redis.pool.testWhileIdle"></property>
   </bean>

   <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
      <property name="poolConfig" ref="jedisPoolConfig" />
      <property name="hostName" value="$redis.host" />
      <property name="port" value="$redis.port" />
      <property name="password" value="$redis.pwd" />
      <property name="usePool" value="$redis.userPool " />
      <property name="database" value="$redis.database" />
      <property name="timeout" value="$redis.timeout" />
   </bean>

   <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
      <property name="connectionFactory" ref="jedisConnectionFactory" />

      <!-- 序列化方式 建议key/hashKey采用StringRedisSerializer -->
      <property name="keySerializer">
         <bean
               class="org.springframework.data.redis.serializer.StringRedisSerializer" />
      </property>
      <property name="valueSerializer">
         <bean
               class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
      </property>
      <property name="hashKeySerializer">
         <bean
               class="org.springframework.data.redis.serializer.StringRedisSerializer" />
      </property>
      <property name="hashValueSerializer">
         <bean
               class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
      </property>
      <!-- 开启REIDS事务支持 -->
      <property name="enableTransactionSupport" value="false" />
   </bean>

   <!-- 对string操作的封装 -->
   <bean id="stringRedisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
      <constructor-arg ref="jedisConnectionFactory" />
      <!-- 开启REIDS事务支持 -->
      <property name="enableTransactionSupport" value="false" />
   </bean>

</beans>

2：redis.properties
　　

#redis.host=127.0.0.1
#redis.port=6379
#redis.pwd=

redis.sentinel.port=26879
#off
redis.host=101.132.113.7
redis.port=6379
redis.pwd=1

redis.database=0
redis.timeout=1000
redis.userPool=true
redis.pool.maxIdle=100
redis.pool.minIdle=10
redis.pool.maxTotal=200
redis.pool.maxWaitMillis=10000
redis.pool.minEvictableIdleTimeMillis=300000
redis.pool.numTestsPerEvictionRun=10
redis.pool.timeBetweenEvictionRunsMillis=30000
redis.pool.testOnBorrow=true
redis.pool.testOnReturn=true

redis.pool.testWhileIdle=true

Util类

RedisUtil

package com.rionsoft.web.controller.redis;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;

import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

/**
 * 备注
 *
 * @author zs
 * @date 2019-08-13
 */
@Component
public final class RedisUtil 
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
    // =============================common============================
    /**
     * 指定缓存失效时间
     * @param key 键
     * @param time 时间(秒)
     * @return
     */
    public boolean expire(String key, long time) 
        try 
            if (time > 0) 
                redisTemplate.expire(key, time, TimeUnit.SECONDS);
            
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 根据key 获取过期时间
     * @param key 键 不能为null
     * @return 时间(秒) 返回0代表为永久有效
     */
    public long getExpire(String key) 
        return redisTemplate.getExpire(key, TimeUnit.SECONDS);
    
    /**
     * 判断key是否存在
     * @param key 键
     * @return true 存在 false不存在
     */
    public boolean hasKey(String key) 
        try 
            return redisTemplate.hasKey(key);
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 删除缓存
     * @param key 可以传一个值 或多个
     */
    @SuppressWarnings("unchecked")
    public void del(String... key) 
        if (key != null && key.length > 0) 
            if (key.length == 1) 
                redisTemplate.delete(key[0]);
             else 
                redisTemplate.delete(CollectionUtils.arrayToList(key));
            
        
    
    // ============================String=============================
    /**
     * 普通缓存获取
     * @param key 键
     * @return 值
     */
    public Object get(String key) 
        return key == null ? null : redisTemplate.opsForValue().get(key);
    
    /**
     * 普通缓存放入
     * @param key 键
     * @param value 值
     * @return true成功 false失败
     */
    public boolean set(String key, Object value) 
        try 
            redisTemplate.opsForValue().set(key, value);
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 普通缓存放入并设置时间
     * @param key 键
     * @param value 值
     * @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期
     * @return true成功 false 失败
     */
    public boolean set(String key, Object value, long time) 
        try 
            if (time > 0) 
                redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
             else 
                set(key, value);
            
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 递增
     * @param key 键
     * @param delta 要增加几(大于0)
     * @return
     */
    public long incr(String key, long delta) 
        if (delta < 0) 
            throw new RuntimeException("递增因子必须大于0");
        
        return redisTemplate.opsForValue().increment(key, delta);
    
    /**
     * 递减
     * @param key 键
     * @param delta 要减少几(小于0)
     * @return
     */
    public long decr(String key, long delta) 
        if (delta < 0) 
            throw new RuntimeException("递减因子必须大于0");
        
        return redisTemplate.opsForValue().increment(key, -delta);
    
    // ================================Map=================================
    /**
     * HashGet
     * @param key 键 不能为null
     * @param item 项 不能为null
     * @return 值
     */
    public Object hget(String key, String item) 
        return redisTemplate.opsForHash().get(key, item);
    
    /**
     * 获取hashKey对应的所有键值
     * @param key 键
     * @return 对应的多个键值
     */
    public Map<Object, Object> hmget(String key) 
        return redisTemplate.opsForHash().entries(key);
    
    /**
     * HashSet
     * @param key 键
     * @param map 对应多个键值
     * @return true 成功 false 失败
     */
    public boolean hmset(String key, Map<String, Object> map) 
        try 
            redisTemplate.opsForHash().putAll(key, map);
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * HashSet 并设置时间
     * @param key 键
     * @param map 对应多个键值
     * @param time 时间(秒)
     * @return true成功 false失败
     */
    public boolean hmset(String key, Map<String, Object> map, long time) 
        try 
            redisTemplate.opsForHash().putAll(key, map);
            if (time > 0) 
                expire(key, time);
            
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 向一张hash表中放入数据,如果不存在将创建
     * @param key 键
     * @param item 项
     * @param value 值
     * @return true 成功 false失败
     */
    public boolean hset(String key, String item, Object value) 
        try 
            redisTemplate.opsForHash().put(key, item, value);
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 向一张hash表中放入数据,如果不存在将创建
     * @param key 键
     * @param item 项
     * @param value 值
     * @param time 时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间
     * @return true 成功 false失败
     */
    public boolean hset(String key, String item, Object value, long time) 
        try 
            redisTemplate.opsForHash().put(key, item, value);
            if (time > 0) 
                expire(key, time);
            
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 删除hash表中的值
     * @param key 键 不能为null
     * @param item 项 可以使多个 不能为null
     */
    public void hdel(String key, Object... item) 
        redisTemplate.opsForHash().delete(key, item);
    
    /**
     * 判断hash表中是否有该项的值
     * @param key 键 不能为null
     * @param item 项 不能为null
     * @return true 存在 false不存在
     */
    public boolean hHasKey(String key, String item) 
        return redisTemplate.opsForHash().hasKey(key, item);
    
    /**
     * hash递增 如果不存在,就会创建一个 并把新增后的值返回
     * @param key 键
     * @param item 项
     * @param by 要增加几(大于0)
     * @return
     */
    public double hincr(String key, String item, double by) 
        return redisTemplate.opsForHash().increment(key, item, by);
    
    /**
     * hash递减
     * @param key 键
     * @param item 项
     * @param by 要减少记(小于0)
     * @return
     */
    public double hdecr(String key, String item, double by) 
        return redisTemplate.opsForHash().increment(key, item, -by);
    
    // ============================set=============================
    /**
     * 根据key获取Set中的所有值
     * @param key 键
     * @return
     */
    public Set<Object> sGet(String key) 
        try 
            return redisTemplate.opsForSet().members(key);
         catch (Exception e) 
            e.printStackTrace();
            return null;
        
    
    /**
     * 根据value从一个set中查询,是否存在
     * @param key 键
     * @param value 值
     * @return true 存在 false不存在
     */
    public boolean sHasKey(String key, Object value) 
        try 
            return redisTemplate.opsForSet().isMember(key, value);
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 将数据放入set缓存
     * @param key 键
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long sSet(String key, Object... values) 
        try 
            return redisTemplate.opsForSet().add(key, values);
         catch (Exception e) 
            e.printStackTrace();
            return 0;
        
    
    /**
     * 将set数据放入缓存
     * @param key 键
     * @param time 时间(秒)
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long sSetAndTime(String key, long time, Object... values) 
        try 
            Long count = redisTemplate.opsForSet().add(key, values);
            if (time > 0)
                expire(key, time);
            return count;
         catch (Exception e) 
            e.printStackTrace();
            return 0;
        
    
    /**
     * 获取set缓存的长度
     * @param key 键
     * @return
     */
    public long sGetSetSize(String key) 
        try 
            return redisTemplate.opsForSet().size(key);
         catch (Exception e) 
            e.printStackTrace();
            return 0;
        
    
    /**
     * 移除值为value的
     * @param key 键
     * @param values 值 可以是多个
     * @return 移除的个数
     */
    public long setRemove(String key, Object... values) 
        try 
            Long count = redisTemplate.opsForSet().remove(key, values);
            return count;
         catch (Exception e) 
            e.printStackTrace();
            return 0;
        
    
    // ===============================list=================================
    /**
     * 获取list缓存的内容
     * @param key 键
     * @param start 开始
     * @param end 结束 0 到 -1代表所有值
     * @return
     */
    public List<Object> lGet(String key, long start, long end) 
        try 
            return redisTemplate.opsForList().range(key, start, end);
         catch (Exception e) 
            e.printStackTrace();
            return null;
        
    
    /**
     * 获取list缓存的长度
     * @param key 键
     * @return
     */
    public long lGetListSize(String key) 
        try 
            return redisTemplate.opsForList().size(key);
         catch (Exception e) 
            e.printStackTrace();
            return 0;
        
    
    /**
     * 通过索引 获取list中的值
     * @param key 键
     * @param index 索引 index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推
     * @return
     */
    public Object lGetIndex(String key, long index) 
        try 
            return redisTemplate.opsForList().index(key, index);
         catch (Exception e) 
            e.printStackTrace();
            return null;
        
    
    /**
     * 将list放入缓存
     * @param key 键
     * @param value 值
     * @return
     */
    public boolean lSet(String key, Object value) 
        try 
            redisTemplate.opsForList().rightPush(key, value);
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 将list放入缓存
     * @param key 键
     * @param value 值
     * @param time 时间(秒)
     * @return
     */
    public boolean lSet(String key, Object value, long time) 
        try 
            redisTemplate.opsForList().rightPush(key, value);
            if (time > 0)
                expire(key, time);
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 将list放入缓存
     * @param key 键
     * @param value 值
     * @return
     */
    public boolean lSet(String key, List<Object> value) 
        try 
            redisTemplate.opsForList().rightPushAll(key, value);
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 将list放入缓存
     *
     * @param key 键
     * @param value 值
     * @param time 时间(秒)
     * @return
     */
    public boolean lSet(String key, List<Object> value, long time) 
        try 
            redisTemplate.opsForList().rightPushAll(key, value);
            if (time > 0)
                expire(key, time);
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 根据索引修改list中的某条数据
     * @param key 键
     * @param index 索引
     * @param value 值
     * @return
     */
    public boolean lUpdateIndex(String key, long index, Object value) 
        try 
            redisTemplate.opsForList().set(key, index, value);
            return true;
         catch (Exception e) 
            e.printStackTrace();
            return false;
        
    
    /**
     * 移除N个值为value
     * @param key 键
     * @param count 移除多少个
     * @param value 值
     * @return 移除的个数
     */
    public long lRemove(String key, long count, Object value) 
        try 
            Long remove = redisTemplate.opsForList().remove(key, count, value);
            return remove;
         catch (Exception e) 
            e.printStackTrace();
            return 0;
        
    



CacheUtil

package com.rionsoft.web.controller.redis;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.concurrent.TimeUnit;

/**
 * 该类根据自己的需求进行封装
 * @author zs
 * @date 2019/8/13
 */
@Component
public class CacheUtil 
    @Autowired
    RedisUtil redisUtil;

    public Boolean getKey(String workerId, String subcontractorId, String projectId, Date checkinTime, String signType) 
        String key = workerId + ":" + subcontractorId + ":" + projectId + ":" + checkinTime + ":" + signType;
        final Object o = redisUtil.get(key);
        if (null != o) 
            return false;
        
        redisUtil.set(key, "1", TimeUnit.HOURS.toHours(24));
        return true;
    







可优化处：由于key值是无限制的，但是越短的话，查询效率越快，而这个需求的另外一种实现方式是直接on duplicate key update 或者insert ignore into 
为了简化下次配置，特此记录